When I started using Zoom, using the Annotate Draw tool gave me a very thin line. But, sometime in the past 6 months, the thinnest line I can select is a fat line -- similar to the thicker option previously.  How do I get that very thin line back? 

The pic attached shows the thinnest line I can get. 

2 weeks ago some problems with the conference began. My home Wi-Fi often doesn't allow me to see or hear participants. And participants can't see or hear me. I have to distribute the mobile Internet from my mobile phone. Sometimes everything is fine, sometimes it's bad. And it's not just me. I live in Russia, and many students have the same problem. The provider says that there are no problems on their side, no restrictions. Perhaps Zoom itself did something and the difficulties appeared. Please tell me what the problem could be. Speed of my router is good.

For the last week, the Audio-Technica mic I've used for years started sounding bad on Zoom. It is fine on all my other audio programs. I reinstalled Zoom. Played with ALL the settings. I spoke to a client of mine who has a production company that knows audio, and he had no solutions that I hadn't tried.

As the audio guy said, it sounds like there are two mics, not one. When I use other mics, it works fine. So, it's only this mic with Zoom. With the mic working with other apps, then I know it's Zoom.

I have spent several hours trying to fix it and trying to speak to someone other than a bot or fill out several tickets.

I'm having a major issue where my audio is getting cut off when other people in my meeting speak. Before multiple people could speak at the same time, but it seems not anymore. But the weird thing is it seems to only be happening with me. I have a professional setup, so there should be nothing on my end causing this. I did find that adjusting my microphone volume in the zoom settings helps a little, but I haven't been able to find a sweet spot that fixes this altogether.

My system is a new high end Asus Zephyrus laptop, a Shure SM7dB mic, Sony MDR7506 headphones, and a Rode RodeCaster Duo. I am also connected to the Internet via hard wired cable with a 1GB connection.