I have noticed that sometimes the download slows dramatically based on how many torrents are "offline".  If I have 2000 offline torrents (not exact just for estimate) then after a day or two the download speed slows.  If the only action I take is to "delete" some of the offline torrents it speeds back up immediately.  No other changes.  Windows 11 system.

Gemini said

It sounds like you’ve hit a classic resource management bottleneck. Even though those torrents are "offline," Tixati still has to keep track of them in its internal database, manage their metadata, and periodically check their status.

When you scale up to thousands of entries, you aren't just looking at bandwidth; you're looking at overhead.

Why Deleting Helps

When Tixati manages a massive list of torrents, several things happen under the hood:

   Database Indexing: Every time Tixati receives a packet or updates a tracker, it may be cross-referencing its entire internal list. If that list is bloated, those lookups take longer.

   Disk I/O & Memory: Windows 11 handles file handles and memory allocation for the process. Thousands of "inactive" items still consume small amounts of RAM and registry/config file space.

   The "Immediate" Speedup: By deleting them, you're instantly reducing the CPU cycles required for list processing, allowing Tixati to focus its "attention" entirely on the active transfers.

Suggested Workarounds

If you don't want to keep manually deleting items, try these adjustments:

   Reduce Global Connections: Go to Settings > Network > Connections. If your global connection limit is too high, Tixati might be struggling to manage the overhead of thousands of potential (even if offline) slots.

   Toggle "Auto-Managed" Status: Ensure that your offline torrents aren't constantly trying to re-announce. You can set them to a "Manual" or "Stopped" state rather than just letting them sit in an error/offline state.

   Use Categories: Moving offline torrents into a specific category won't necessarily stop the resource drain, but it can help you bulk-select and delete them more efficiently.

   Increase UI Refresh Interval: Sometimes the "slowness" is actually the UI lagging while trying to render a massive list. Go to Settings > User Interface and see if you can throttle how often the list updates.

The Bottom Line: Tixati is incredibly lean, but every software has a "sweet spot" for list management. If you don't need those 2,000 offline entries for seeding or archival purposes, keeping the list lean is the best way to maintain peak performance on Windows 11.