No, the extra features will not cause more spikes. Just like “less features” will not solve the problem.
Have you tried all the troubleshooting for the CPU spiking?
https://www.steinberg.net/nc/en/support/knowledgebase_new/show_details/kb_show/hyper-threading-and-asio-guard.html?tx_p77sbknowledgebase_pi1[keyword_search]=Spikes
Have you tried disabling “suspend VST3 plugin processing when no audio”?
Have you tried disabling automatic Hitpoint detection?
Etc …
HTH
Fredo