Deleting rows from wp_options table

Hi,

I recently moved hosts and found that I had a lot of speed and conenction issues with my site.

I’ve removed all plugins that are not absolutely neccesary and the same goes for tables created by plugins I no longer use.

I have noticed that my wp_options table has a lot of extra entires that I no longer need. It also seems to ge a lot of “overhead” too.

Is it okay to delete the rows for plugins that have been removed to try to keep it clean?

In fact I am working on a theme that won’t use any plugins, is it possible to completely reset the table and start again?

TIA