1.5.7 slow when products more 4000-5000

I Update my Client Zencart 1.5.6 to 1.5.7.c site working properly, but when copied old categories and products site too slow and given me this error "PHP Fatal error: 1153:Got a packet bigger than 'max_allowed_packet' bytes :: insert into sessions (sesskey, expiry, `value`)
values ('jp3eh3bv79gqn3hnujthluqkic', 1637649993, 'c2VjdXJpdHlUb2tlbnxzOjMyOiI4ODQ5MDM0MzQxMzY1NjVhMjE1MDg3ZDJiMGZhNzQ2OSI7Y3VzdG9 tZXJzX2hvc3RfYWRkcmVzc3xzOjg6IkFzaHdpbmltIjtjYXJ0SUR8czowOiIiO2NhcnR8TzoxMjoic2h vcHBpbmdDYXJ0IjoxNDp7czo4OiJjb250ZW50cyI7YTowOnt9czo1OiJ0b3RhbCI7aTowO3M6Njoid2V pZ2h0IjtpOjA7czo2OiJjYXJ0SUQiO047czoxMjoiY29udGVudF90eXBlIjtiOjA7czoxODoiZnJlZV9 zaGlwcGluZ19pdGVtIjtpOjA7czoyMDoiZnJlZV9zaGlwcGluZ193ZWlnaHQiO2k6MDtzOjE5OiJmcmV lX3NoaXBwaW5nX3ByaWNlIjtpOjA7czoxNDoiZG93bmxvYWRfY291bnQiO2k6MDtzOjIyOiJ0b3RhbF9 iZWZvcmVfZGlzY291bnRzIjtpOjA7czoyMjoiZGlzcGxheV9kZWJ1Z19tZXNzYWdlcyI7YjowO3M6MjM 6ImZsYWdfZHVwbGljYXRlX21zZ3Nfc2V0IjtiOjA7czozMjoiZmxhZ19kdXBsaWNhdGVfcXVhbnRpdHl fbXNnc19zZXQiO2E6MDp7fXM6MjE6IgBiYXNlAG9ic2VydmVyQWxpYXNlcyI7YToxOntzOjM3OiJOT1R JRklZX09SREVSX0NBUlRfU1VCVE9UQUxfQ0FMQ1VMQVRFIjtzOjM2OiJOT1RJRllfT1JERVJfQ0FSVF9 TVUJUT1RBTF9DQUxDVUxBVEUiO319Y2hlY2tfdmFsaWRfcHJvZHxiOjE7bmF2aWdhdGlvbnxPOjE3OiJ 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and taking 25 sec in normal URL, when I installed CEON URL its taking 50+sec


Same error with New zencart version also, if product more 5000+

CEON and USU URL too slow site, no any problem like in OLD version

No any problem in OLD zencart version

Well, by the title of the thread, I was going to suggest: https://docs.zen-cart.com/user/speed/speed_up_site/

But... This is a session related issue and who knows (yet) how much more is involved.

How about revisiting the Posting tips and answering the questions? The posting tips are displayed when Reply or Reply With Quote are selected within the thread and also they are presented when writing a creating a new thread.

Only problem with new version which error I mentioned and also MYSQL GONE error, site working properly in 1.5.6

in OLD zencart 1.5.6 166135 products and site working fast
in New version 15.7 same product site crashed

Both site in same SERVER
https://dealbyethan.biz ( NEW version without SEO URL)

https://dealbyethan.com (OLD version with SEO URL)

Please remove URL after checked, Thank you

Most likely an incorrect upgrade - you probably missed something during the upgrade or didn't do something properly. I've had this happen to me once before and it was simply my fault because I had overlooked something during the upgrade process...

https://dealbyethan.biz ( NEW version without SEO URL)

https://dealbyethan.com (OLD version with SEO URL)

Its not upgrade , used Totally Fresh latest version 1.5.7c (work properly with 1000 products, problem when products goes more 4000-5000)

Is it the long load time that is the problem? I loaded https://dealbyethan.biz ( NEW version without SEO URL) with developer tools open and watched the console.
The page took 8 minutes to load on a really fast fiber connection (900MB+ down).
1442 requests
663.74 MB / 55.04 MB transferred <<<< LOL
Finish: 8.16 min
DOMContentLoaded: 3.78 min
load: 8.16 min

The amount of [HTTP/2 406 Not Acceptable] and [HTTP/2 404 Not Found 192566ms] is incredible (1300 entries in the console log) :shocking:
A lot of the images it can not load appear to be for the megmenu

So when it finally gets done timing out all of those failed requests it finally loads something...

Thank you for all, for solution and help