Preston North End manager Simon Grayson
The game was even in terms of possession, but the Rams fashioned 16 attempts on goal compared to the home team's nine.
Forsyth's goal was Derby's first in this season's Championship, after an opening-day goalless draw with Brighton and a 2-0 defeat at Barnsley.
Preston are yet to register a point this season and lie 23rd in the table. This defeat represented the Lilywhites' second consecutive home defeat, having lost 2-1 to Fulham on the weekend.
Preston's Callum Robinson
Preston fans took to Twitter after the game to vent their frustrations with the club's start to the season, although there was praise for the performance of young striker Callum Robinson.
Preston North End. People will not pay £27 to watch aimless balls pumped up to strikers feeding off bits.— Wheelo (@MintyPNE) August 16, 2016
first time as a Preston fan I've been genuinely worried since Westley days.. Grayson just doesn't do it for me #pnefc— tom (@tommydlad) August 16, 2016
It's so funny how gash we've started this season #pnefc— Samuel Mundy (@Samtheyellowman) August 16, 2016
Anyway, onwards and upwards, see you at QPR. #PNEFC— The Voice (@WIBGPNE) August 16, 2016
The Voice - keeping the faith.
So I'm confident we'll survive, no need to panic, however I can't see me getting my free premier season ticket at the close of season #pnefc— Craig Shaw (@Shawspeed10) August 16, 2016
We need to spend £2-3 million on 4 players (2 in midfield). That generates excitement, atmosphere and performances will follow. #pnefc— Inside North End (@pnefr) August 16, 2016
We're playing far too narrow for a team looking to play over the top or out wide. Our right side is brittle. Has to be fixed. #pnefc— Paul Valentine (@iampav) August 16, 2016
It's starting to get like under Westley..I just expect us to lose every game again! If we don't start scoring we are in trouble #pnefc— Adam Smith (@Adam_GSmith) August 16, 2016
Last season we were 24th after 10 games with just 7 points, Grayson solved our problems & we had a great season. Too early to panic! #pnefc— Pete Riley (@PeteRiley1991) August 16, 2016
If we were getting hammered I'd be worried. Small margins in football. But it's simple.... 15 wins from 43 games. 21 home games left. #pnefc— PNEAKTE (@PNEAKTE) August 16, 2016
Tonight was my first game of the season and I'll put my neck on the line and say if we play like that we'll stay up. Just. #PNEFC— The Voice (@WIBGPNE) August 16, 2016
Selling our talisman, declining attendances, weaker squad than last season & never look like scoring.. Gunna be a very long season #PNEFC— Adam Luke Jackson (@AdamJackson1991) August 16, 2016
Cal Robinson was excellent, team performance was good but a rb and striker needed urgently #pnefc— s.n (@shayn99) August 16, 2016
Preston visit Loftus Road on Saturday afternoon for a tough clash with QPR who currently lie 5th. Simon Grayson's side will have to start winning soon or the fans may lose patience.