CS:GO My DM Server Lags When Im Having Over 30 bots on the server

Hi Im hosting my cs go dm server on my windows gaming computer and play on it at the same time (I dont think thats the problem) but im wondering is the bots causing more lag than normal humans do on the server because my SV is jumping down and up and just because no one join the server im not able to see if it lags with more players, Im really interested in the people who hosts the zombie servers with 64 players how the hell is the server capable of something like that. And I got 100/100 Internet So Possibly That Is Not The Problem.

I Bought My Computer For;
18000 SEK
2811,36 USD

Im having -tickrate 128 on the server and the rates;

sv_maxcmdrate 128
sv_maxrate 0
sv_mincmdrate 128
sv_minupdaterate 128
sv_maxupdaterate 128
fps_max 400
sv_minrate 30000
sm_cvar sv_unlag 1

I also have the srcdsfpsbooster thats why the fps_max is 400.