Ya sometime we are looking for High speed . LTE ? DSL etc … each has technology has it own limitation . and sometime you would like to load balance your traffic between multiple ISP ! .
DSL good for gaming , but bandwidth limitation ! . LTE might give you good bandwidth but with latency ( not suitable for gaming ).
what about if you would like doubling your bandwidth . ya might work
now there are many affordable multi wan or Gateway load balancing routers . yes they become cheap and really provide advance features .
you can utilize those boxes to expand your bandwidth , or choose which apps/server utilize which ISP . the beauty also some provide you with statistics that if you run this app let say youtube it will be much faster in ISP 1 , more than ISP 2 . having latency monitor + bandwidth gauges
I would recommend peplink – nice product and it do the job . you can order it from amazon or any online shop . link here
if you want a simple and cost effective one . you could also consider TP-Link gateway LB . its available in Kuwait from Burhain Tech in Huawei .
Have you ever wonder how smart DNS services work ? well they are using a solution called SNI . where based on DNS retriever they divert the traffic . so if you are targeting a US based it proxy traffic to the US server . if locally then it goes direct .
how about building your own Smart DNS !! seems difficult .. no! it much easier but you need to be a little IT Geek .
this guy help you how to build your own Smart DNS – Visit his site to learn more – Link , also you could check this site link
some might ask , ok I have VPN no need for Smart DNS . well the beatify of smart DNS that you could control which traffic goes to the proxy server and which goes locally ! . like if you want to watch something in your country or visit a local site why you need your traffic to go to the proxy server which might be a US based then come back to the local server ! .
in VPN this is doable also but require playing in routing tables to achieve this . but utilizing dns much simpler .