With 3.7.3, the CPU usage is 90%+ in torrent usage. I've been following for a week. With a torrent file attached, as the speed increases, I get more CPU usage and timeout messages. If 3-5 torrents are already attached, the CPU will peak in a much shorter time.
Not sure, but there may be a connection issue with public trackers as well, which seems to increase CPU usage in this case. I've never encountered these CPU-related situations before, even when downloading and uploading multiple times at the same time.
Despite these, I have no problems with my internet access. The modem does not reboot either. It can work like this for hours. Only interface access hangs.
What is the situation with you?