Donovan Mitchell had the highest PER in the 2020 playoffs with 50+ minutes played, with a 33.7 rating.

highest nba player efficiency rating 2020 playoff playing 50 minutes

Interpreted as:

highest NBA player efficiency rating by a player 2020 playoff playing 50 or more minutes

NAME	PER	MIN	SEASON	TM	GP	MPG	PPG	RPG	APG	SPG	BPG	TPG	FGM	FGA	FG%	3PM	3PA	3P%	FTM	FTA	FT%	PTS	REB	AST	STL	BLK	TOV	PF	+/-
Donovan Mitchell	33.7	264	2019-20	UTA	7	37.7	36.3	5.0	4.9	1.0	0.3	4.1	11.9	22.4	52.9	4.7	9.1	51.6	7.9	8.3	94.8	254	35	34	7	2	29	11	+38
Giannis Antetokounmpo	31.3	277	2019-20	MIL	9	30.8	26.7	13.8	5.7	0.7	0.9	3.3	10.0	17.9	55.9	1.4	4.4	32.5	5.2	9.0	58.0	240	124	51	6	8	30	31	+27
LeBron James	30.2	762	2019-20	LAL	21	36.3	27.6	10.8	8.8	1.2	0.9	4.0	10.2	18.2	56.0	2.1	5.7	37.0	5.1	7.1	72.0	580	226	184	26	18	84	40	+165
Anthony Davis	29.7	769	2019-20	LAL	21	36.6	27.7	9.7	3.5	1.2	1.4	2.5	9.8	17.1	57.1	1.1	2.9	38.3	7.1	8.5	83.2	582	204	73	26	30	53	56	+184
Kawhi Leonard	27.8	511	2019-20	LAC	13	39.3	28.2	9.3	5.5	2.3	0.8	2.5	10.1	20.6	48.9	1.8	5.6	32.9	6.2	7.2	86.2	367	121	72	30	11	33	29	+25
James Harden	27.5	448	2019-20	HOU	12	37.3	29.6	5.6	7.7	1.5	0.8	3.8	9.1	19.0	47.8	3.3	9.8	33.3	8.2	9.7	84.5	355	67	92	18	10	45	43	+32
Luka Doncic	26.8	215	2019-20	DAL	6	35.8	31.0	9.8	8.7	1.2	0.5	5.2	10.7	21.3	50.0	2.7	7.3	36.4	7.0	10.7	65.6	186	59	52	7	3	31	17	-38
Joel Embiid	26.6	145	2019-20	PHI	4	36.3	30.0	12.3	1.3	1.5	1.3	3.8	8.5	18.5	45.9	1.0	4.0	25.0	12.0	14.8	81.4	120	49	5	6	5	15	18	-53
Mike Conley	26.3	165	2019-20	UTA	5	33.0	19.8	2.8	5.2	1.6	0.2	1.0	6.2	12.8	48.4	3.6	6.8	52.9	3.8	4.4	86.4	99	14	26	8	1	5	10	-1
Kristaps Porzingis	26	94	2019-20	DAL	3	31.3	23.7	8.7	0.7	0.0	1.0	1.0	7.0	13.3	52.5	3.0	5.7	52.9	6.7	7.7	87.0	71	26	2	0	3	3	9	-7
Serge Ibaka	25.3	251	2019-20	TOR	11	22.8	14.8	7.7	1.2	0.2	1.3	1.1	5.7	10.0	57.3	2.1	4.1	51.1	1.3	1.3	100.0	163	85	13	2	14	12	27	+34
Nikola Jokic	24.8	694	2019-20	DEN	19	36.5	24.4	9.8	5.7	1.1	0.8	3.3	9.4	18.1	51.9	2.2	5.2	42.9	3.5	4.2	83.5	464	187	109	20	15	62	68	-14
Jimmy Butler	23.8	806	2019-20	MIA	21	38.4	22.2	6.5	6.0	2.0	0.7	2.8	6.9	14.0	48.8	0.7	2.0	34.9	7.8	9.1	85.9	467	136	127	41	14	59	37	+52
Jamal Murray	23.7	753	2019-20	DEN	19	39.6	26.5	4.8	6.6	0.9	0.3	2.8	9.8	19.4	50.5	3.3	7.2	45.3	3.7	4.1	89.7	504	92	126	18	6	53	42	+9
Nikola Vucevic	22.9	185	2019-20	ORL	5	37.0	28.0	11.0	4.0	0.8	0.6	2.6	11.2	22.2	50.5	3.6	8.8	40.9	2.0	2.2	90.9	140	55	20	4	3	13	13	-48
Bam Adebayo	20.8	687	2019-20	MIA	19	36.2	17.8	10.3	4.4	1.0	0.8	2.5	6.5	11.6	56.4	0.0	0.1	0.0	4.7	6.1	78.3	338	196	84	19	16	47	58	+61
Jayson Tatum	20.7	690	2019-20	BOS	17	40.6	25.7	10.0	5.0	1.0	1.2	2.8	8.5	19.6	43.4	2.8	7.4	37.3	5.9	7.2	81.3	437	170	85	17	20	48	41	+92
Rudy Gobert	20.5	270	2019-20	UTA	7	38.6	16.9	11.4	1.1	0.6	1.4	1.3	6.9	10.6	64.9	0.0	0.0		3.1	6.0	52.4	118	80	8	4	10	9	26	+26
Robert Williams III	19.9	149	2019-20	BOS	13	11.5	3.7	3.9	0.8	0.2	0.5	0.5	1.8	2.4	74.2	0.0	0.1	0.0	0.2	0.5	33.3	48	51	10	3	6	7	18	+24
Boban Marjanovic	19.8	82	2019-20	DAL	6	13.7	6.8	5.8	0.8	0.0	0.3	0.5	2.8	5.0	56.7	0.0	0.2	0.0	1.2	1.5	77.8	41	35	5	0	2	3	9	+19
Chris Paul	19.3	261	2019-20	OKC	7	37.3	21.3	7.4	5.3	1.6	0.4	3.3	7.9	16.0	49.1	2.3	6.1	37.2	3.3	3.7	88.5	149	52	37	11	3	23	18	-38
Enes Kanter Freedom	19	102	2019-20	BOS	11	9.3	4.5	3.9	0.6	0.0	0.0	0.4	2.0	3.8	52.4	0.1	0.1	100.0	0.5	0.9	50.0	50	43	7	0	0	4	19	+31
Malcolm Brogdon	18.9	160	2019-20	IND	4	40.0	21.5	4.3	10.0	1.0	0.0	2.5	6.5	16.3	40.0	2.3	6.0	37.5	6.3	7.0	89.3	86	17	40	4	0	10	10	-29
Myles Turner	18.6	146	2019-20	IND	4	36.5	15.8	10.8	0.8	0.5	4.0	2.3	6.3	11.0	56.8	1.5	3.5	42.9	1.8	4.0	43.8	63	43	3	2	16	9	13	-38
Damian Lillard	18.6	143	2019-20	POR	4	35.8	24.3	3.5	4.3	0.5	0.3	3.5	6.5	16.0	40.6	3.3	8.3	39.4	8.0	8.3	97.0	97	14	17	2	1	14	4	-43