Best practices for server optimization under cPanel limits?

hey everyone, following up on that LVE cpu throttling thread we had going. we've actually made some initial web server tweaks, messing with our LiteSpeed/Apache configs, and it definitely helped a bit. but we're still occasionally hitting those pesky resource limits, especially when traffic really spikes on our app.

it feels like the bottleneck is just shifting around now, you know? while the web server tuning did help, i'm starting to suspect the issue is moving to other areas, maybe like our PHP-FPM worker processes or even MySQL/MariaDB database connections. i'm kinda lost on where to look next without just blindly increasing limits, which isn't really a long-term solution. what are the effective next steps for deeper server optimization when just tweaking basic web server configs isn't quite enough? are there specific cPanel/WHM tools or logs we should be monitoring beyond just LVE usage? i'd love some recommendations for optimizing PHP-FPM pool settings, opcache, or even specific database queries from a hosting perspective. really looking for some actionable advice to prevent further throtteling without having to upgrade our entire dedicated server just yet. any insights from experienced devs or sysadmins would be super helpful. waiting for an expert reply.