I have this same problem.  I just got gigabit fiber.  I have been running my fiber ISP ragged trying to find out what the problem was with the slowdowns.  It never occurred to me that it could be the RV325.  I finally, in my own testing, narrowed it ...

A final reply.  I am running v1.3.2.02 (2016-09-23, 15:17:06) because all (three that I found) subsequent firmware versions have bugs and/or regressions that make them unusable for my needs.  I have no hope of support from Cisco.

I'll reply to myself.  Ya know, I don't know who reads these things, but complaints here in my experience tend to server no useful purpose with Cisco.  Now, Cisco is supposed to be a world leader in networking.  How can they be that with all the STUP...

I started getting these recently (yesterday, 2020-07-17).  I am running VERY OLD firmware because at one point a Cisco "upgrade" caused the router to break.  I was able to rebuild it (with the help of having saved the configuration and old firmware)....

I made a long post that was unflattering to Cisco about this bug which is still present more than a year after it appeared, and the post will appear here when "approved."  Surprisingly, last time I looked it was here, so apparently it was "approved."