having run Studio in its various iterations (2009 - 2015) without any major system performance issues for some time now (about 3 or so years), my 2015 SP2 started to run very slow a couple of days ago on a project containing 11 word files (about 10K words in total). I've processed similar files for the same customer for many years now without any major issues.

My laptop: HP Pavilion with AMD 10-5745M APU; 8 GB RAM.

2015 simply started crashing during the translation process (usually when confirming a segment).

Steps taken:

Restart.
Downloaded the re-released SP3 for 2015 without finding any improvement.
I had 2017 on account, so I downloaded and installed it.
Reorganised termbases.

The slowness and crashing has now been joined by the termbase window sometimes lagging behind. The word "Searching" is constantly displayed at the bottom of the main screen.

And the computer is running very hot when I have SDL operating.

I do need to do some maintenance work in my TM (very large) and TBs, but I'd like to know if there is a relatively quick solution to such an issue. (I've been on enforced leave for a couple of weeks and am already playing a game of catch-up with outstanding jobs, so a day of fiddling around isn't really an option.)

Thanks in advance.