I could look at the save if you want or you can try a few things
* Possible Patch
Let's see if this does anything
Princess & Conquest v0.16.13
Map 002: World Map N
CE 37: Bandit Spawn
Patches/Patch1570112468.rvdata2
Map 002:
Deleted Events: 342-347 (Bandit De-Spawn If Reign Fallen)
Edited Event 410: Spawn Point For Res1 Malt
CE 37: Bandit Spawn
Incorporated information from Deleted Events 342-347
Anyone testing this let me know if it does anything

I'm rather curious as two previous saves seem to have these events bugged for no apparent reason so I'm just cutting them off
Now since I haven't experienced a slow down/bloating bug personally I'll leave the next bit if you just feel like trying