these are very good values, nothing wrong in it, please do the following
please recheck your VPI/VCI settings
for copper values are
VPI(0-255): 0
VCI(32-65535): 103
For Fiber cable customers use VPI= 8 and VCI= 81
i think you have fibre line so please insert values accordingly, you can confirm them from ptcl help line
change your dns to 8.8.8.8 and 8.8.0.0
ptcl also have this issue on backend, on every time load shedding(light goes) the speed effects and need a hard reset , this effects some exchanges and not all.regardless if you have a UPS or not as its an exchange issue