Please do remember that “increase in RAM usage” in 99% cases is a normal behaviour - that is why such a thing as RAM exists. Questions here are:
- Does the increase stop at some point and remains the same? If yes, then some service has “max RAM/cache” setting or built-in limit specified and RAM usage will increase freely until this limit is reached (for example, not well-adjusted queue type settings, large MTU values specified, etc.);
- Do you have some “lists” that might increase dynamically and even maybe without max table size limit possible. Excellent example is firewall address-list, DNS cache, connection tracking table, etc.
- etc.
The fact that RAM usage is increasing does not necessarily mean that there is a bug. If you do think that there is a real memory leak, then please - reboot your router, wait for ~5 minutes, generate supout file A, wait, wait until RAM usage becomes very high and not much RAM is left for the system, generate supout file B, send both files to support@mikrotik.com.