which cpu do you have in your 2013 laptop? if its a four core with hyper-threading at decent speeds like 2.8ghz, a new machine may not be worth the upgrade. intel has hit a brick wall with performance gains for the last several years, so only more cores or higher clock speeds will show big improvements. besides premiere, most of the programs you list tend to top out around 4 cpu cores, so its higher clock speeds that are needed. until adobe can modernize its software to use more cpu cores, we will be stuck in limbo between poor/old software design and intel cpu's with almost zero performance gains over each new generation.
for discrete graphics it depends on what is being done. those programs you list are mostly cpu bound, so the video card will have limited benefit and use. in premiere there are some fx that are gpu accelerated, like lumetri color, and its those effects where a decent video card can make a difference. i think the basic radeon 550 might be around 2x more powerful than the intel graphics. nvidia and amd graphics have made good advancements in power efficiency, so they can get more powerful cards in laptops. meanwhile intel has made some good gains with their integrated graphics, but is perhaps even further behind now with what amd and nvidia can get into laptops.
Thanks for the reply. That's actually very helpful in determining if I need the GPU or not. Just for reference this is the CPU in my current 2013 computer:Intel® Core™ i7-4700MQ Processor (6M Cache, up to 3.40 GHz) Product Specifications . It does have 4 cores, base 2.4 GHz, but its 4th gen (Haswell?) which I remember being super excited about at the time! It used to do very well but as time goes on, processes get slower. It's not the rendering time I'm worried about (I can use that as an excuse for more hours sunk into a project), but its the actual time it takes to get anything done. For example, moving a slider in Premiere might cause a 3-4 second lag time in response and it just feels awful. And forget more complicated processes!
that cpu you have is still somewhat recent, so its down to clock speeds when comparing it against new computers. new laptops do have slightly higher base and turbo speeds, but its not going to be a big improvement. i don't know if mac's are the same, but when a windows computer slows down, its usually windows or installed software causing the slow down. formatting and reinstalling windows gets rid of the slow down. also, if your laptop only has a hdd, upgrading to a ssd might make a noticeable difference.
I tried to find an Intel 4-core mobile processor based on the data I found on a current MacBook Pro 15" and it gave this specification for the base unit CPU "2.8GHz quad-core Intel Core i7, Turbo Boost up to 3.8GHz, with 6MB shared L3 cache" The only Intel mobile CPU that I could find is a 3-year old 4th generation i7-4810MQ which not much improvement over your i7-4700MQ. So much for the entry level MacBook Pro besides it does not have an nVidia GPU. Now it does have a PCIe based SSD which I suspect is much better than your current PC laptop.
Why don't you test your PC laptop with my Adobe Premiere Pro BenchMark (PPBM) and see why your system is not editing smoothly like my i7-4700HQ/GTX 765M does. Maybe your media is more demanding than mine