Why does Innodb slow down for a while after moving to a new VPS?

Question

MySQL

I transfer databases from one vps to another, use mysqldump and then upload it via mysql. Databases from 400MB to 25GB. Everything flies on old vps, but when I transfer the base to a new vps, then the brakes begin with a processor load of 100%. I have this effect for about 10 hours, then the base starts working at a normal speed and does not load more than usual.
I have an assumption that while the brakes are on, innodb is building indexes. But having searched for information on how to update the indexes in innodb, I did not find anything because it is said in innodb that they are always up to date.
What could be the problem?

Answer 1

For all tables, you need to execute and the brakes will disappear.
ANALYZE TABLE table_name;

Answer 2

Allocate space for ibdata