Lol. I don't care about my actual GSP or rank.
What I care about is that I constantly feel like I'm regressing or not improving.
And when you start the night with 2.9mil and drop to 800k you know you're doing poorly.
Algorithmic ranking systems have always been wack and not a very accurate measurement of one's skill. Don't take it seriously.
My brother is really good at Counter Strike: Global Offensive. He currently has o ver 2,000 hours in the game. But for some reason, he's never been able to get above a Silver rank in the game. Both friends and strangers have remarked that he should be much higher than that, and he's often been accused of having a "smurf" account (a new account highly-skilled players use to play with newbies or lesser skilled players), but his hours say otherwise.
Then there was me 10 years ago in Halo 3 trying to get above a 39 skill level, winning games and gaining no points, and then losing a game and getting knocked down to 37 or 36. Why? It had to do with a bunch of invisible, intangible factors, including my playing history. It's possible that if I started a new account, I'd be able to get a way higher skill ranking, because I wouldn't be weighed down by whatever nebulous factors were making it difficult to go up.
Or several years ago, Battlefield 4 had a "skill" stat that fluctuated wildly between games. My K/D and SPM stats were very good and consistent, but the skill stat kept flying up and down, usually due to an occasional poor game I might have had. Eventually they removed the stat altogether, because it sucked and didn't make any sense.
That's what GSP is. It's trying to quantify something that can't be quantified, and almost no game has done this well. You're not regressing, you just had some bad games and a flawed system took it out of proportion. I've seen dozens of people mention the same issue here and elsewhere.
That doesn't mean a high GSP doesn't require skill and isn't something to be proud of, but the way it handles losses is obviously messed up, and it's nothing new in the world of ranking systems. It's just unfair and poorly thought out.