What’s your retraction settings? I had this issue too but ended up fixing it with a combination of retraction, faster travel speed, and reduced overall flow. I think the issue is pressure buildup during support areas gets translated over ot the print as a blob.
It only happens with supports though. Nothing else. I have already dialed in my retraction settings with no issue. I printed a retraction tower test that came out perfect.
It has to be something with cura where it doesn’t retract after printing a support
If that’s the case, take a look at combing although I don’t think combing would take care of all the issues, just reduce them.
I had said retraction because it looks like you have stringing
Yeah 
the strings only come from the supports. Not normal retractions.
Good find man. Just curious, about how far away was the support from the blobs?
Maybe 3cm or so
You could add a wiping tower next to the support structure if retraction doesn’t fix it.
Slic3r has the option to wipe into support material, as well. Cura probably has a similar setting.
Yah from what I’ve seen most of it is pretty shiny which I generally like. It’s basically Coke bottle plastic so ya know a bit of flex to it when thin especially and pretty shiny surface. Some of it is more or less translucent as well so can get some cool effects with diffuse light through mostly hollow prints.
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What is your retraction speed and distance? Are you using coast?
Would definitely add more retraction, faster travel, and reduced flow. When I reduced my flow just by 2% (98% flow), it went from teenager zitty to pretty clean. Of course results will very but it shouldn’t be more than 3%
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PETG, among other materials, does not play well with moisture. This really became a problem this week… alas I found two cheap solutions to dry and store my filament.
The Filament Dryer
This same basic setup is sold as a “filament drying system” for about $130. 
I bought one of these food dehydrators for $35 and printed 3 of these sections. Instant filament dryer FTW.
Check out the original product (or just refer to the drying times on their site 
):
https://www.printdry.com/how-to-dry-filaments/
Source:
Filament Storage
I found some cheap sterilite containers with gaskets in the lids at Target. It turns out that I am not really that original and there are a lot of addons available on Thingiverse… check out the links from @deucesdown back in November:
I used the same container and spool holder, then added a mount for a hygrometer (also cheap AF). For some reason I had plenty of 608 bearings for the spool holder…
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35mm speed
1.5mm distance (direct drive)
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This is what everyone needs.
Moisture in filament and bad extruder(the one that pushes filament) are main culprits that causes bad prints.
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Something is wrong with my printbed. I’m currently leveling it but 1 corner is always so tight that i can’t even lower the spring anymore. All other corners are like they should. The adjustment wheel just spins freely but the nozzle still is pressing down on the bed
It seems like you are so close! Have you tried one of those retraction test towers? I would vary retraction from your current level to maybe 2mm in small increments, then also change retraction speed from 15-40 mm/s. The results are interesting… even different types of PETG behave dramatically different. You may even want to print a temperature tower first… I had some PETG that was stringy at 220, worked great at 235, and was stringy again at 250. Yet some works perfectly fine at a ridiculous 260 (overture clear PETG).
A couple definitive tests save a lot of headache for each new material.
Sounds like you need to move the end stop for your Z axis up a bit.
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