1-The number of scripts in the mod have NONE relation to the heavy of the scripts.
2-The game NOT execute the scripts in constant way. The game ONLY execute the scripts for a specific time each frame.
3-Put the [Papyrus] section of your Skyrim.ini in default values or the recomended values.
4-Any script can be suspended and the script related to events are called inmediatelly for be executed.
5-ONE STACK DUMP and ONLY ONE is not a problem. A lot of STACK DUMP mean a problem in a mod.
6-Play whit the log activated or deactivated not have any diference.
7-The SPAM IN THE LOG have cero impact in the performance of the game.

If you have a problem in the game must be caused by a problematic mod.

That is all... have fun.