@emmanuel@wald.ovh Btw I already figured out why accessing your web server is slow:
$ host wald.ovh
wald.ovh has address 86.243.228.45
wald.ovh has address 90.19.202.229
wald.ovh has 2 IPv4 addresses, one of which is dead and doesn’t respond.. That’s why accessing your website is so slow as depending on client and browser behaviors one of two things may happen 1) a random IP is chosen and ½ the time the wrong one is picked or 2) both are tried in some random order and ½ the time its slow because the broken one is picked.
If you don’t know what 86.243.228.45 is, or it’s a dead backup server or something, I’d suggest you remove this from the domain record.