Fatal Error when running P3 Profiler

Hello,

My site is unreasonably slow, about 6seconds loading. I tried to run the P3 profiler to see if a particular plugin is the problem, but I get this error below:

A fatal error occurred during profiling: Out of memory (allocated 152567808) (tried to allocate 9961551 bytes) in file /hermes/bosnaweb23a/b319/ipg.stroitscom/wp/wp-content/plugins/wp-smush-pro/lib/class-wp-smush.php on line 711