Does migrating Sitecore website from IIS 8.5 to IIS 10.0 for gains of HTTP2(Page Load speeds) make site performing well. Does anybody have done test or have experience of doing so, to share here.
I don't need usual performance tuning dump, did already everything like page\component caching at different levels, use of CDN, JS/CSS bundling & minification, use of Critical CSS, Image Optimization, but not able to reduce server response time from average of 8 seconds to 3-4 seconds on 3G data test. Don't suggest to beef-up/scale number of CD server, already did. Don't suggest anything to do with SQL optimization, already did.
The only way i see is to move on frameworks like AMP or JAM Stack where websites are HTML files embed with JS API calls & hosted in edge CDNs. Essentially moving away from Sitecore.