Not helping. I have over 20 peers but dropped from 2000k to 80k stayed between 90k and 44k. Will not top 100k

Indeed, this issue persists in v3.11. The original workaround (keeping Tixati open in the Bandwidth tab) worked again when I disabled the status bar under Settings > User Interface > Widget Styles. The speeds are also normal when you minimize Tixati; as stated in the topic and other comments, viewing the Transfers tab is what causes the speed drop.

v3.12 Also notice when you open tixati from minimized state download speed drops drastically.

I have noticed this behaviour over the years and versions but I have assumed it has to do with UI vs network processing.  If I have a lot of torrents and they are all actively connected seeding and leeching then sitting on the transfer window or having a lot of torrent property details windows open seems to affect transfer speeds.  I have always assumed it has been my ancient Win7 torrent machine with limited memory and little parallel threading capability.

These windows have a lot of information to be calculated and displayed; likewise with a lot of active torrents the data transfer/network side of things will be busy indeed.  I have always been too lazy to do any diagnostics and my observations really are just anecdotal. Any conclusions are just WAGs.   The devil is always in the details. I rarely see the problem now (3.12).

Depending on your network connection there can also be channel saturation issues between upload and download.   I have also seen this apparent behaviour but it turned out to be just coincidental with stuff happening at the seeder/leecher end or because of my network provider.   Crap happens even with gig fiber.

Motivated people should look at the CPU/memory stats when a problem happens.

The conflict, if any, may be at the OS level rather than anything Tixati does.  Every version of Windows I have used has UI and network performance and stability issues.   I would be curious if the same thing happens on Linux.