I got news for you ANY drier is perfectly fine. Don’t get caught up in the hype. The difference between an S2 and an S1 as an example is negligible. I returned my S2 but that was because I was dissatisfied with what I was getting for my money, but note that it still dried filament. Here’s that review Sunlu S2 VS Creality Space PI Bake-Off Review
Yes its fine, but the 55€ really hurt, especially when knowing that drying on the bed would work as well. But because I use a A1 mini with a small bed, it didnt work as intended. It definitly dries, but I expected more…
Not trying to discount the OP’s experience, but just wanted to say that the new PETG-HF prints beautifully for me.
Yes, you must dry it out of the package, and I also keep a dryer running throughout the print. But my P1P prints it like PLA with virtually no stringing.
Granted the drying is a bit of a pain, as you have to have multiple dryers for long prints, and plan ahead for filament runout.
But it’s become my new go-to filament.
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Sounds nice! I really hope after drying it will be the same for me. I really love the finish of the prints, besides they have a ton of holes haha…
My room dryer is able to messure the humidity and it is at roughly 75%. I guess thats the reason why my filament is still wet.
To clarify a bit, the Bambu Wiki says to remove the lid of the box, so it just serves as a cover, concentrating the heat.
Whatever works for you…
I saw that post from the wiki but had a problem. Due to the small heatbed of my a1 mini, the box without the lid would be almost open on the bottom. Thats why i cut some carboard on the bottom and made holes on the top for ventilation. Like i said, it work somehow, but not perfectly. I guess it would be better to have a big heatbed with a box laying on top.
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I was just getting ready to purchase about 8 rolls of various colors of this PETG. So, is this everyone’s opinion?
If you read through the thread you can get an idea of how opinions are going.
Not trying to be rude but reading the comments can help you sort through why some are having issues and others aren’t. I don’t know that it’s a settled issue though.
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Hummm, and you let it finish printing? 
After the night of drying and one more test print, the results are absolutely the same.
I really hope your Sunlu S2 mod helps with drying, otherwise I can’t use the PETG HF for „beautiful“ prints
Could you please confirm if the filament drier cover is slightly open when drying?
For a lot of filament driers, the very small hole left for the filament to pass through is not enough to for the moisture to escape, and it remains partially trapped in the unit.
If you leave a small section of the drier open, it will be easier for moisture to escape while drying. But please note that once the drying is completed, the drier should be closed again completely.
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Have you tried to adjust any print settings yet? I find that I have to adjust my retraction with some PETGs, though I have not tried the new Bambu PETG. In the filament settings go to the override settings and try reducing your retraction a bit. I currently have mine set to 0.4mm with a deretraction speed of 50mm/s
Bellow is a picture taken of some risers I was printing for a dehydrator, they were printed with Tinmorrey PETG, The only difference between the rings is retraction settings. The top is standard settings and the bottom is set to 0.4mm and the middle one is in between. Top was straight out of the dryer after 8 hours drying and by the time I printed the bottom the filament had been out hanging on the printers external spool holder for a few hours.
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How should we find your air dryer when completed?
It was actually closed. Good point! I will try that now again:)
I will try those settings. But I am really sure that the holes are due to wet filament. I can definitely hear water boiling.
It’s close to posting but it’s an involved build. I’ll start a thread for anyone interested in it. The build itself is done but still venting fumes. Once I do a comparison run between two basically identical rolls that came in a two-pack, if those numbers are good, I’ll post it. Based on the test stand results, this one should perform really well.
But there is really not much to it. It’s an aquarium pump pushing air through a jar of dry silica gel beads. The problem is I include hygrometers to monitor performance. At the RH% where you want to be operating, it’s too low to use the indicating beads to tell you they are spent. They don’t change color until well after they are way too wet for this application. So hygrometers are needed but enclosing them is the issue. The dead volume behind them needs to be minimized and you need to kick air into the sensor port for fast response. Makes a big difference and really shows off how good the cheap hygrometers really are. But as soon as a 3D print is included there is the risk of air leaks so sealing all the air passages is critical.
But soon.
If you can hear pops while extruding it’s definitely still wet. For drying filament I recommend a cheap round food dehydrator from Amazon, they are about £35 in the uk and the airflow is far better than a filament dryer and you can dry many rolls at once and they are a lot faster at drying due to the airflow. You can find plenty of prints available online for the riser rings and other bits for them. Then just use your filament dryer to print from. Here’s a photo my ghetto dryer with riser rings I printed for more space, dries filament fast and well.
65% is way too high.
With PLA people are looking for getting below 20% RH.
The silica gel in there, if it’s not “dry” itself, will actually be a water source in the heat - it’s how you dry silica gel.
In the photo the dryer has just been filled and turned on with fresh out the packet filament, I live in the uk and our average humidity this time of year is around 70%. the filament in the dryer is Esun PETG it was dried at 65c for 8 hours.
Edit: sometimes it stays in the dryer longer I aim for 10% humidity when done then it gets vac bagged with desiccant and a humidity stat.
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That photo is misleading then if you just closed up the dryer. But 70% RH is very high and you are probably wetting your filament instead of drying it. I’d be curious to see an image after it has been running for an hour or so but I bet your high ambient humidity is the issue.