Great job, many thanks to all involved. My speed tests if of interest:
new router, no sqm, old router (dedicated QoS to cable interconnection) between it and ISP, official ISP tariff 50 Mbits/s
no sqm, direct cable connection to ISP:
now I have to figure out which interface to choose for the sqm (wan/wan6)
3. sqm, direct to ISP:
- sqm, through old router:
4(b) sqm, old router (qos disabled):
Interesting results, clearly the router buffering a lot, will play around with sqm settings and old router.
All the best to everyone, take care in these difficult times.