Weird Fritz 13 game

Does anybody know what is going on here? I've played maybe 300 games on fritz 13 and this is by far the strangest game i've ever had. I'm not a very good player, i just play for fun and usually move within 5 seconds every move. my rating on it is 2022 but quite frankly that is ludicrous seeing as i've lost around 90% of games at around 1800 rating on it. I've won the odd game at 2300ish but still my rating of 2022 is bonkers. Playing this game i felt i made at least 2 major errors early on, then fritz seemed to just go in to meltdown. Can anybody see any logic in the 3 moves in particular fritz made that baffle me completely? Scratching my head on this one.